:root {
  --background: rgb(255, 255, 230);
  --background-intro: rgb(250, 220, 120);
  --text: rgb(50, 50, 50);
  --sun: rgb(245, 180, 100);
  --hill: rgb(50, 235, 150);
  --hillshade: rgb(40, 160, 100);
}
@media (prefers-color-scheme: dark) {
  :root {
    --background: rgb(0, 45, 60);
    --background-intro: rgb(0, 70, 100);
    --text: rgb(255, 255, 255);
    --sun: rgb(105, 210, 255);
    --hill: rgb(0, 95, 135);
    --hillshade: rgb(0, 45, 60);
  }
}
* {
  box-sizing: border-box;
  scrollbar-color: var(--sun) var(--background-intro);
}
body {
  background: var(--background);
  color: var(--text);
  font-family: 'Lucida Console', 'Courier New', monospace;
  line-height: 1.8;
  margin: 0;
}
header {
  background: var(--background-intro);
  color: var(--text);
  display: flex;
  flex-direction: column;
  height: 40vh;
  justify-content: center;
  overflow: hidden;
  position: relative;
  text-align: center;
}
header h1 {
  font-size: 3.5em;
  margin: 0;
  z-index: 10;
}
header p {
  margin: 0;
  z-index: 10;
}
header sun {
  background: var(--sun);
  border-radius: 100%;
  height: 10vh;
  left: 30vw;
  position: absolute;
  top: 3vh;
  width: 10vh;
}
header hill {
  background: var(--hill);
  border-radius: 40px;
  bottom: 0;
  height: 40vh;
  left: 50vw;
  position: absolute;
  transform: rotate(45deg) translate(50%, 50%);
  width: 40vh;
}
header hillshade {
  background: var(--hillshade);
  border-radius: 80px;
  bottom: -5vh;
  height: 40vh;
  left: 30vw;
  position: absolute;
  transform: rotate(45deg) translate(50%, 50%);
  width: 40vh;
}
main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-gap: 20px;
  margin: 0 auto;
  max-width: 1200px;
  padding: 20px;
}
main article {
  background: var(--background-intro);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
}
main article a {
  background: var(--background);
  border-bottom: 2px solid var(--text);
  border-radius: 5px;
  color: var(--text);
  padding: 10px 14px;
  text-decoration: none;
  transition: border .15s ease, margin .15s ease;
  margin: 0 auto;
  align-self: end;
}
main article a:hover {
  border-bottom: 1px solid var(--text);
  margin: 1px auto 0 auto;
}
main article a:active {
  border: 0;
}
main article h1 {
  font-size: 1.8em;
  margin: 0 auto;
}
main article p {
  margin: auto;
  padding: 10px 0;
}
@media (max-width: 1000px) {
  header hill {
    transform: rotate(45deg) translate(40%, 70%);
  }
  header hillshade {
    transform: rotate(45deg) translate(20%, 80%);
  }
  main {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  main {
    grid-template-columns: repeat(1, 1fr);
  }
}
@media (prefers-color-scheme: dark) {
  header sun {
    left: unset;
    right: 30vw;
  }
}